Hydrogen fluoride precautions

Because of the hazardous nature of anhydrous hydrogen fluoride, adequate precautions should he taken to protect the head, eyes, and skin. Rubber gloves, an apron, and a plastic face mask are strongly recommended. All operations should be carried out in a hood. If hydrogen fluoride comes in contact with the skin, the contacted area should be thoroughly washed with water and then immersed in ice water while the patient is taken to a physi-... 

Hydrazoic acid reaction with cyclobu-tanecarboxyhc acid, 47, 28 Hydrogenation of t butylazidoacetate to glycme ( butyl ester, 46,47 Hydrogen bromide 46, 43 reaction with y butyrolactone, 46, 43 Hydrogen fluoride anhydrous, precautions in use of, 46, 3 in preparation of mtromum tetra-fluoroborate 47, 57 reaction with benzoyl chloride, 46,4 with boron tnfluonde in conversion of p cymene to m cymene, 47, 40 in bromofluorination of 1 heptene, 46, 11... 

Various fluorinations, which need principally much energy for the generation of the reagent fluorine, are carried out electrochemically in liquid hydrogen fluoride, even in an industrial scale [66]. Owing to the extreme toxicity and the corrosive medium, special precautions are necessary. 

In most cases, the reaction of sulfur tetrafluoride with oxygen functions requires the presence of catalytic to molar amounts of hydrogen fluoride or Lewis acid type fluorides. Standard quality sulfur tetrafluoride, unless special precautions are taken, is unavoidably contaminated by trace amounts of hydrogen fluoride. The existence of ionic species SF3+ and HF2 in the SF4/HF system has been documented by spectral and conductometric investigations34 and there is evidence from vapor-pressure measurements of retardation of the reaction by coordination of hydrogen fluorine on the carbonyl oxygen.35... 

Caution Hydrogen fluoride is very hazardous. All operations must be carried out in a hood, and the precautions outlined in Note 1 should be followed. 

Handling precautions for the gas or anhydrous liquid have been detailed.8 A polythene condenser for disposal of hydrogen fluoride has been described.8,9... 

General Procedure. Liquid hydrogen fluoride (b.p. 19.4°) containing only 0.1-0.2% of water is available commercially in steel cylinders. It is highly corrosive to tissue,182 and the vapors are very toxic. Consequently, it should be handled with care goggles and rubber gloves must be worn. With heed to these precautions hydrogen fluoride can be handled safely and easily. 

Hydrogen compounds, binary, nomenclature of, 2 258 Hydrogen fluoride, anhydrous, 1 134 anhydrous, precautions in using, 3 112... 

Hydrogen Fluoride Cleavage Precautions in the Use of Hydrogen Fluoride... 

Caution. Although the toxicity of the phosphoryl fluorohalides has not been investigated in detail, precautions similar to those suggested for the handling of volatile phosphorus-fluorine compounds should be taken. These preparations should be performed only in a well-ventilated hood, and contact with the skin should be avoided. Because the compounds hydrolyze easily, they are vesicants like hydrogen fluoride. 

Caution. For a description of the apparatus and precautions required when withdrawing fluorine from a cylinder, see procedure for xenon difluoride. Arsenic pentafluoride is very toxic. It hydrolyzes easily and therefore is a blistering agent as is hydrogen fluoride. Care must be taken to avoid breathing in and contact with the skin. 

Precaution Incompat. with hydrogen fluoride and strong bases PS035 [United Chem. Tech.]... 

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